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2.Human Reproduction
medium
Which one of the following statements is incorrect about menstruation?
A
At menopause in the female, there is especially abrupt increase in gonadotropic hormones.
B
The beginningof the cycle of menstruation is called menarche.
C
During normal menstruation about $40\ mL$ blood is lost.
D
The menstrual fluid can easily clot.
(AIPMT-2008)
Solution
(d) : Menstruation is a process which involves discharge of blood $(45 -100\ mL)$, serous fluid, cell debris and mucosal fragments from cast off endometrial lining due to reduce titre of both estrogen and progesterone hormone. Blood clotting does not occur due to presence of fibrinolysin.
Standard 12
Biology
